Combined valve-cap and pump-coupling.



H. P. KRAFT. COMBINED VALVE CAP AND PUMP COUPLING. APPLICATION FILED Fri 8.28.1916.

1,2 6 1,49% Patented Apr. 2, 1918.

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HENRY I. KRAFT, OF RIDGEWOOD, NEW JERSEY.

ooiunrnnn VALVE-CAP Am) PUMP-COUPLING.

Specification of Letters Patent.

Patented Apr. 2, 11918.

Application filed February 28, 1916. Serial No. 80,801.

. To all 10. mm may concern:

Be it known that I, HENRY P. KRAFT, a citizen of the United States of America, residing in Ridgewood, in the county of Bergen and State of New Jersey, have invented "certaln new and useful Improvements in recess B adapted to Combined Valve-Caps and Pump-Couplings, of which the following is a specification.

his invention relates to combined valve caps and pump couplings, and aims to pro vide certain improvements therein.

in an application filed by M. C. Schweinert January 19, 1916, Serial No. 72,878, there is described and claimed a novel construction of valve cap wherein means are provided for using the cap as an inflating device. The present application relates to a particular construction of this device by which the cost is greatly cheapened and the construction is facilitated.

Referring to the drawings which illustrate one form of the invention,

Figure 1 is an form.

Fig. 2 is a similar View taken at right angles to Fig. 1.

Fig. 3 is a vertical section.

Fig. 4 is a horizontal section.

Referring to the drawings let A' indicate the cap as a whole which is'provided with a fit over the nipple of a tire valve, the wall C being screw-threaded internally to engage the screw-threads of the nipple. Vi it-hin the recess B is located a packing D and a backing plate 1*) so that the packing may swivel with relation to the body of the cap.

elevation of the preferred Passing through the cap preferably at r1ght angles to the axis thereof istformed a bore F which is adapted to receivea tubular adapt-er G. This tubular adapter carries at one end a screw-thread H which is adapted to fit the interior threads of the valve nipple and at the other end is formed with a screw thread I which is adapted to engage a pump coupling.

It will be observed that the standard valve nipple has an external thread which is engaged by the thread C and an internal thread which is adapted to be engaged by the thread H and ordinarily one or the other of these threads is used to connect the standard pump coupling with the valve. But certain pump couplings noteblwthpse which are made abroad are for ed with screw-threads which will practica age the thread It is hence necessary in using such couplings on the standard valve that some intermediate coupllng device shall be provided and this has usually been fitted to the pump coupling itself. According to the invention described in the aforesaid application the ordinary valve cap is fitted to act as a coupling but in such construction the cap is turned out of are formed integrally to the body of the cap. This construction is relatively expensive and diflicult to manufacture.

By the present invention the tubular adapter G is formed separately from the body of the cap and is afterward inserted in the bore F, thus greatly simplifying and cheapening the product. Means are provided for fastening the tubular adapter G securely in the, body of the cap, and I prefer to secure thisfastening by continuing the thread I along the tubular adapter until it nearly reaches the thread H. According to this method the bore F .is provided with an internal screw-thread, and the tubular adapter is screwed into the body of the cap until it reaches its seat. In order to prevent the tubular adapter from becoming uriscrewed it is preferably formed with a shown in Fig. 4, adapter is screwed home lies close to the outer surface of thecap.

the groove J. It then becomes impossible for the tubular adapter to become unscrewed.

It will be observed that handle for the tubular adapter G in screwing it into the valve nipple and pump connection, while reciprocally the tubular adapter acts as a handle in screwing on the valve cap. I prefer to provide a screw driver projection such as K at the top of the cap as is common with ordinary caps, such screw driver projection being utilized to manipulate the inside working parts of the valve. When this is done the tubular pter G acts also as a handle for manipuat-ing the cap during this operation.

A packing such as M is usually prnvided the cap acts as a v to make a tight joint with the valve nipple While a tight joint with the pump coupling is customarily secured by a tapered face 0 which bears against a corresponding seat in the pump coupling.

While I have shown and described one construction of the invention, it Will be understood that I do not Wish to be limited thereto, since various changes can be made therein without departing from the spirit of the invention.

What I claim is 1. A valve cap having means for t gaging a tire valve and having a bore through it, and a tubular adapter secured in said bore and having threaded portions to engage respectively such tire valve and a pump coupling not adapted to fit said valve.

2. A valve cap having means for engaging a tire valve and having a bore through it, and a tubular adapter secured in said bore and having threaded portions to engage respectively such tirc valve and a pump coupling not adapted to fit said valve, said adapter and cap having interengaging portions to fasten the adapter in the cap.

3. A valve cap having means for engaging a tire valve and having a bore through it, and a tubular adapter secured in said bore and having threaded portions to engage respectively such tire valve and a pump coupling not adapted to fit said valve, sa1d tubular member having a groove, and said cap having a portion lying in said groove to fasten the adapter to the cap.

4. A valve cap having means for engaging a tire valve and having a threaded bore through it, and a tubular adapter screwthreaded to engage said bore, and having at its ends screw-threaded portions to engage respectively such tire valve and a pump coupling not adapted to fit said valve.

through it, and a tubular adapter screwthreaded to engage saidbore and having at its ends screw-threaded portions to engage respectively such tire valve and a pump coupling not adapted to fit said valve, and said adapter and cap having interengaging portions to prevent rotation of said adapter.

6. A valve cap having means for en aging a tire valve and having a threaded ore through it, and a tubular adapt-er screwthreaded to engage said bore and having at its ends screw-threaded portions to engage respectively such tire valve and a pump coupling not adapted to fit said valve, and said adapter having a groove, and said cap having a portion engaging said groove to prevent unscrewing of said adapter.

7. A valve cap having a recess adapted to receive the nipple of a' tire valve, said recess having screw-threaded Walls to engage said nipple, and said cap having a screw driver pro ection in alinernent With said recess, and between said recess and projection having a threaded bore, and a tubular adapter threaded to engage said bore, and having at one end a threaded portion to engage an interior screw-thread on said tire valve, and having at the other end a threaded portion adapted to engage an interior screw-thread on a pump coupling which does not fit such valve.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

HENRY P. KRAFT.

Witnesses:

E. V. MYERS, I T. F. WALLACE. 

